As part of his video game week, which started yesterday with the Xbox One and Killer Instinct/Forza 5, Jimmy Fallon will be doing live demos for a few upcoming titles, with Mark Cerny and Knack getting the spotlight last night.

In the video, you can see the full Knack PS4 box art, more of the PS4, being able to upload videos/screenshots to YouTube/Ustream/Facebook, Jimmy Fallon playing Knack, which Mark says is “sort of Crash Bandicoot meets Katamari Damacy,” and Assassin’s Creed IV: Black Flag being confirmed as a PS4 launch title. Also, Mark Cerny calls the PS4 the “most powerful video game console ever made, they were “targeting about 10 times the performance of any previous system,” and “first person shooters are very important to us” when talking about the DualShock 4:

What do you think of Knack? Does it look interesting? Let us know in the comments below.